اثرات محلول پاشي سلنيوم بر تحمل به خشكي در ارقام مختلف لوبيا قرمز

Effects of Selenium foliar application on drought tolerance in different Red bean varieties (Phaseolus Vulgaris L.)

Drought stress is one of the most important natural factors that caused reduction of grain yield in Bean cultivars. Optimum managementʹs ways to plant support under drought condition and avoid of the yield loss is very important. Under drought condition, Selenium has important roles by means antioxidant activity enzyme can reduced cell damage. Therefore, this experiment conducted in research field of the Islamic Azad university of Karaj branch in 2005. Experiment carry out to shape of the split factorial in base of Randomize Complete Block with four replication. Main plot comprise to irrigation treatments in two levels (Normal and Stress) and sub plot treatments comprise to three Red bean cultivars and two levels Selenium density (0 and 18 g/ha). Result showed that traits mean grain yield, 100 grain weight, pod number per plant, and grain number per pod, in drought treatment was decreased significantly (p<0/5). Foliar application of Selenium avoided significant decrease of the grain yield to rate 1184.62 to 1118.6 kg/ha under drought stress. Foliar application of Selenium caused significant increase in rate of Super oxide dismutase enzyme activity. Rate of the Super oxide dismutase enzyme activity in stress condition in Goly cv. was higher than Akhtar and Sayad cv.